E., A., D., H., M., S.(1990).The Sociology of U.S. agriculture : an ecological perspective / Don E. Albrecht, Steve H. Murdock (Ed.ke-1).:Iowa State University Press.
Gaya MLA
Albrecht, Don, E.., Murdock, Steve, H.."The Sociology of U.S. agriculture : an ecological perspective / Don E. Albrecht, Steve H. Murdock".Ed.ke-1:Iowa State University Press,1990.Textbook.